Search Results - "Sykora, Steffen"

Renormalization approach to the superconducting Kondo model by Sykora, Steffen, Meng, Tobias

“…An approach to bound states based on unitary transformations of Hamiltonians is presented. The method is applied to study the interaction between electrons in…”
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Probing the unconventional superconducting state of LiFeAs by quasiparticle interference by Hänke, Torben, Sykora, Steffen, Schlegel, Ronny, Baumann, Danny, Harnagea, Luminita, Wurmehl, Sabine, Daghofer, Maria, Büchner, Bernd, van den Brink, Jeroen, Hess, Christian

“…A crucial step in revealing the nature of unconventional superconductivity is to investigate the symmetry of the superconducting order parameter. Scanning…”
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Elastoresistivity of Heavily Hole-Doped 122 Iron Pnictide Superconductors by Hong, Xiaochen, Sykora, Steffen, Caglieris, Federico, Behnami, Mahdi, Morozov, Igor, Aswartham, Saicharan, Grinenko, Vadim, Kihou, Kunihiro, Lee, Chul-Ho, Büchner, Bernd, Hess, Christian

“…Nematicity in heavily hole-doped iron pnictide superconductors remains controversial. Sizeable nematic fluctuations and even nematic orders far from magnetic…”
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Ubiquitous enhancement of nematic fluctuations across the phase diagram of iron based superconductors probed by the Nernst effect by Wuttke, Christoph, Caglieris, Federico, Sykora, Steffen, Steckel, Frank, Hong, Xiaochen, Ran, Sheng, Khim, Seunghyun, Kappenberger, Rhea, Bud’ko, Sergey L., Canfield, Paul C., Wurmehl, Sabine, Aswartham, Saicharan, Büchner, Bernd, Hess, Christian

“…The role of nematic fluctuations for unconventional superconductivity has been the subject of intense discussions for many years. In iron-based…”
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Resonant inelastic x-ray scattering as a probe of the phase and excitations of the order parameter of superconductors by Marra, Pasquale, Sykora, Steffen, Wohlfeld, Krzysztof, van den Brink, Jeroen

“…The capability to probe the dispersion of elementary spin, charge, orbital, and lattice excitations has positioned resonant inelastic x-ray scattering (RIXS)…”
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Theoretical approach to resonant inelastic x-ray scattering in iron-based superconductors at the energy scale of the superconducting gap by Marra, Pasquale, van den Brink, Jeroen, Sykora, Steffen

“…We develop a phenomenological theory to predict the characteristic features of the momentum-dependent scattering amplitude in resonant inelastic x-ray…”
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Heavy fermion properties of the Kondo Lattice model by Sykora, Steffen, Becker, Klaus W.

“…We study the S = 1/2 Kondo lattice model which is widely used to describe heavy fermion behavior. In conventional treatments of the model the Kondo interaction…”
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Unconventional superconductivity and interaction induced Fermi surface reconstruction in the two-dimensional Edwards model by Cho, Dai-Ning, Brink, Jeroen van den, Fehske, Holger, Becker, Klaus W., Sykora, Steffen

“…We study the competition between unconventional superconducting pairing and charge density wave (CDW) formation for the two-dimensional Edwards Hamiltonian at…”
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Interband quasiparticle scattering in superconducting LiFeAs reconciles photoemission and tunneling measurements by Hess, Christian, Sykora, Steffen, Hänke, Torben, Schlegel, Ronny, Baumann, Danny, Zabolotnyy, Volodymyr B, Harnagea, Luminita, Wurmehl, Sabine, van den Brink, Jeroen, Büchner, Bernd

“…Several angle-resolved photoemission spectroscopy (ARPES) studies reveal a poorly nested Fermi surface of LiFeAs, far away from a spin density wave…”
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Evidence for a percolative Mott insulator-metal transition in doped Sr 2 IrO 4 by Sun, Zhixiang, Guevara, Jose M., Sykora, Steffen, Pärschke, Ekaterina M., Manna, Kaustuv, Maljuk, Andrey, Wurmehl, Sabine, van den Brink, Jeroen, Büchner, Bernd, Hess, Christian

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Evidence for a percolative Mott insulator-metal transition in doped Sr_{2}IrO_{4} by Zhixiang Sun, Jose M. Guevara, Steffen Sykora, Ekaterina M. Pärschke, Kaustuv Manna, Andrey Maljuk, Sabine Wurmehl, Jeroen van den Brink, Bernd Büchner, Christian Hess

“…Despite many efforts to rationalize the strongly correlated electronic ground states in doped Mott insulators, the nature of the doping-induced…”
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Renormalization approach to the superconducting Kondo model by Sykora, Steffen, Meng, Tobias

“…SciPost Phys. 13, 016 (2022) An approach to bound states based on unitary transformations of Hamiltonians is presented. The method is applied to study the…”
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Disorder-induced coupling of Weyl nodes in WTe 2 by Sykora, Steffen, Schoop, Johannes, Graf, Lukas, Shipunov, Grigory, Morozov, Igor V., Aswartham, Saicharan, Büchner, Bernd, Hess, Christian, Giraud, Romain, Dufouleur, Joseph

“…The finite coupling between Weyl nodes due to residual disorder is investigated by magnetotransport studies in WTe$_2$. The anisotropic scattering of…”
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Disorder-induced coupling of Weyl nodes in WTe_{2} by Steffen Sykora, Johannes Schoop, Lukas Graf, Grigory Shipunov, Igor V. Morozov, Saicharan Aswartham, Bernd Büchner, Christian Hess, Romain Giraud, Joseph Dufouleur

“…The finite coupling between Weyl nodes due to residual disorder is investigated by magnetotransport studies in WTe_{2}. The anisotropic scattering of…”
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Generalized diagonalization scheme for many-particle systems by Sykora, Steffen, Hübsch, Arnd, Becker, Klaus W

“…Phys. Rev. B 102, 165122 (2020) Despite the advances in the development of numerical methods analytical approaches still play the key role on the way towards a…”
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Absence of hexagonal to square structural transition in LiFeAs vortex matter by Hoffmann, Sven, Schlegel, Ronny, Salazar, Christian, Sykora, Steffen, Nag, Pranab Kumar, Khanenko, Pavlo, Beck, Robert, Aswartham, Saicharan, Wurmehl, Sabine, Büchner, Bernd, Fasano, Yanina, Hess, Christian

“…Phys. Rev. B 106, 134507 (2022) We investigated magnetic vortices in two stoichiometric LiFeAs samples by means of scanning tunneling microscopy and…”
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Elastoresistivity of heavily hole doped 122 iron pnictides superconductors by Hong, Xiaochen, Sykora, Steffen, Caglieris, Federico, Behnami, Mahdi, Morozov, Igor, Aswartham, Saicharan, Grinenko, Vadim, Kihou, Kunihiro, Lee, Chul-Ho, Büchner, Bernd, Hess, Christian

“…Front. Phys. {\bf 10} 853717 (2022) Nematicity in the heavily hole-doped iron pnictide superconductors remains controversial. Sizeable nematic fluctuations and…”
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Strain-derivative of thermoelectric properties: a sensitive probe for nematicity by Caglieris, Federico, Wuttke, Christoph, Hong, Xiaochen, Sykora, Steffen, Kappenberger, Rhea, Aswartham, Saicharan, Wurmehl, Sabine, Büchner, Bernd, Hess, Christian

“…The nematic instability of iron-based superconductors is an undebatable ingredient of the physics of iron-based superconductors. Yet, its origin remains…”
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Ubiquitous enhancement of nematic fluctuations across the phase diagram of iron based superconductors probed by the Nernst effect by Wuttke, Christoph, Caglieris, Federico, Sykora, Steffen, Steckel, Frank, Hong, Xiaochen, Ran, Sheng, Khim, Seunghyun, Kappenberger, Rhea, Bud'ko, Sergey L, Canfield, Paul C, Wurmehl, Sabine, Aswartham, Saicharan, Büchner, Bernd, Hess, Christian

“…The role of nematic fluctuations for unconventional superconductivity has been subject of intense discussions for many years. In iron-based superconductors,…”
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Quasiparticle interference in an iron-based superconductor by Sykora, Steffen, Coleman, Piers

“…Phys. Rev. B 84, 054501 (2011) We develop a model for the effect of a magnetic field on quasiparticle interference in an iron-based superconductor. Recently,…”
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